飲糖水= oral glucose toleranct test (OGTT)
a test used in the diagnosis of diabetes (糖尿病). This fasting test need 3 hours to do. A quantity of glucose will be given to you by mouth, after a period of fasting, and the concentration of sugar in the blood and urine is estimated at regular intervals during the next few hours. These readings indicate the ability of your body to utilize glucose (sugar).